A novel anti-collision protocol with collision-based dynamic clustering in multiple-reader RFID systems

Authors:
Jianwei Wang;Dong Wang;Yuping Zhao;Timo Korhonen
Affiliations:
Shenzhen Institute of Advanced Technology and The Chinese University of HongKong, Shenzhen, China;University of California, Davis, Communication Department;Peking University, Satellite and Wireless Communications Lab, Peking, China;Helsinki University of Technology, Communications Lab, Helsinki, Finland
Venue:
AIC'08 Proceedings of the 8th conference on Applied informatics and communications
Year:
2008

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Abstract

The Reader Collision Problem (RCP) is a bottle-neck decreasing the reading efficiency in multiple-reader RFID systems. This paper proposed a novel anti-collision protocol - DRA (Distributed Reservation-based Anti-collision) protocol to solve the RCP in multiple-reader RFID systems. Temporal Cluster Headers (TCHs) are dynamically selected among the potentially interfered readers in DRA protocol. The selected TCHs coordinate the communication sequence of all the slave readers within their control range and enable a collision-free reading procedure among all the readers. Both analytical and simulation results show that DRA protocol dramatically out-performs the existing RCP protocols in both reading efficiency and power consumption. Moreover, DRA protocol can be easily extended and applied in general wireless sensor networks.